.w {
    width : 985px;
    margin: 0 auto;
}

.main {
    width : 1280px;
    margin: 0 auto;
}

.article {
    display       : flex;
    flex-direction: row;
    align-items   : center;
}

.main>h3>a {
    margin-left: 166px;
    font-size  : 12px;
    color      : #626262;
    font-weight: normal;
}

.camera {
    width     : 486px;
    height    : 355px;
    text-align: center;
    margin    : 55px 0 40px 156px;
}
.small {
    margin-top: 10px;
    ;
    display        : flex;
    flex-direction : row;
    justify-content: center;
}

.small img {
    width : 96px;
    height: 90px;
    border: 1px solid #b4b4b4;
    margin: 0 -2px 0;
}

.camera_details {
    margin-left: 60px;
    height     : 355px;
}

.camera_details h2 {
    color      : #83abe1;
    font-size  : 25px;
    line-height: 46px;
}

.camera_details h3 {
    font-size  : 25px;
    font-weight: normal;
    line-height: 46px;
}

.camera_details h4 {
    font-size  : 18px;
    font-weight: normal;
    line-height: 50px;
}

.camera_details p {
    font-size  : 12px;
    line-height: 20px;
}

.camera_details .btn {
    margin-top      : 37px;
    width           : 169px;
    height          : 50px;
    border-radius   : 8px;
    background-color: #b5b5b5;
    font-size       : 21px;
    color           : #ffffff;
}

.camera_details .btn:hover {
    background-color: #468bd9;
}

.camera_details .btn:first-of-type {
    margin-left: 9px;
}

.camera_details .btn:last-of-type {
    margin-left: 53px;
}

.presentation .title_01 {
    display         : flex;
    flex-direction  : row;
    height          : 100px;
    background-color: #b5b5b5;
}

.presentation .title_01 li {
    position   : relative;
    width      : 94px;
    height     : 100px;
    line-height: 100px;
    text-align: center;
    font-size  : 21px;
    color      : #ffffff;
}

.presentation .title_01 li:hover {
    background-color: #faf8f8;
    color           : #77a4df;
}

.presentation .title_01 li:hover::after {
    content         : "";
    display         : inline-block;
    width           : 100%;
    height          : 1px;
    background-color: #3c9cd3;
    position        : absolute;
    left            : 0;
    bottom          : 0;
}

.presentation .title_01 li:first-of-type {
    margin-left: 184px;
}

.presentation .title_01 li:nth-of-type(2) {
    margin-left: 68px;
}

.presentation .title_01 li:last-of-type {
    margin-left: 75px;
}

.presentation .product_details li {
    text-align: center;
}

.presentation .product_details h2 {
    font-size : 33px;
    color     : #0b5ae4;
    text-align: center;
}

.presentation .product_details h3,
.presentation .product_details p {
    font-size : 12px;
    color     : #c6c6c6;
    text-align: center;
}

.presentation .product_details h2:first-of-type {
    margin-top: 72px;
}

.presentation .product_details h3:first-of-type {
    margin-top: 20px;
}

.presentation .product_details p:first-of-type {
    margin-top   : 15px;
    margin-bottom: 70px;
}

.presentation .product_details h2:nth-of-type(2) {
    margin-top: 40px;
}

.presentation .product_details h3:nth-of-type(2) {
    margin-top: 15px;
}

.presentation .product_details p:nth-of-type(2) {
    margin-top   : 23px;
    margin-bottom: 40px;
    line-height  : 21px;
}

.presentation .product_details h2:nth-of-type(3) {
    margin-top: 60px;
}

.presentation .product_details h3:nth-of-type(3) {
    margin-top: 13px;
}

.presentation .product_details p:nth-of-type(3) {
    margin-top   : 25px;
    margin-bottom: 32px;
    line-height  : 21px;
}

.product_details .picture_1 {
    display        : flex;
    flex-direction : row;
    align-items    : center;
    justify-content: center;
}

.product_details .picture_2 {
    text-align: center;
}

.title_02,
.title_03 {
    height          : 100px;
    line-height     : 100px;
    background-color: #b5b5b5;
    font-size       : 21px;
    color           : #ffffff;
    padding-left    : 184px;
}

.picture_3 {
    margin: 86px 0 130px;
    text-align: center;
}
.more {
    margin: 73px 0 122px;
    display: flex;
    flex-direction: row;
    justify-content: center;
}
.more li {
     margin: 0 45px;
}